Jabez buens



(No Model.)

J. BURNS.

MIXING MACHINE. No. 279,328. Patented June. 12,1883.

JIIIHE INVENTOR (fa 2,567 Burns @712 BY ATTORNEYS UNITED STATES PATENT OFFICE.

JABEZ BURNS, OF BROOKLYN, NEW YORK.

MIXING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 279,328, dated June 12, 1883.

Application filed February 2, 1883.

poses; and it consists in the novel construction and arrangement of parts hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1 represents a vertical longitudinal section. Fig. 2 is an end view. Fig. 3 is a cross-section on the line a: m, Fig. 1. Fig. 4. is a detail view.

Similar letters indicate corresponding parts.

The letter A designates two standards forming the bearings for a shaft, B, which is provided with pulleys, or otherwise arranged to receive a revolving motion. On this shaft is mounted a mixing-drum, which is divided transversely, and at about its mid-length, into two sections, 0 0, one of which is fixed to the shaft, while the other is keyed thereto by a feather or spline, 0, so that this section is adapted to slide on the shaft, and at the same time share its motion. Those portions of the drum-sections O C engaging the shaft B con- 4 sist of spiders or skeleton heads D D, and

on the shaft B and connected to the sliding drum-section O, by means of a couplingpiece, H, which is secured to the head D, and engages a circumferential groove, f, in the sleeve. Said sleeve, moreover, is provided with a spiral slot, 1', whereby it engages a guide-pin k, on the shaft B, so that when the sleeve is turned in one direction it slides outward on the shaft, carrying with'it the s1id ing drum-section G, whereby an opening is created between the drum-sections for the dis- 7 (No model.)

charge of material from the drum, while when .the sleeve is turned in the other direction it slides to an inner position, thereby forcing the sliding drum-section back against the fixed section, and holding it in that position. The sleeve G is provided with a hand-wheel, G, for turning it, and in order to prevent the accidental displacement of the sliding drum-section the outer terminal of the spiral slot i is made straight transversely to the shaft. Both drunrsections G O are inclined downwardly from the outer to the inner end, as shown in Fig. 1, and the material thus having a tendency to move toward the center or division line of the drum, its discharge is facilitated or hastened.

If desired, both drum-sections O C may be provided with inclined ribs to throw the mainbefore set forth, with the revolving shaft, of

the mixing-drum divided into two sections, one fixed and the other adapted to slide on the shaft, and a device for locking the sliding drum-section against the fixed section.

2. The combination, substantially as hereinbefore set forth, of the mixing-drum divided into two sections, with the revolving shaft provided with a guide-pin, and having one section fixed to the shaft and the other adapted to slide thereon, and with the lockingsleeve connected to the sliding drum-section, and provided with a spiral slot whereby it engages the guide-pin on the shaft, for the purpose specified.

3. The combination, substantially as hereinbefore set forth, of the mixing-drum divided into two sections, both inclined downwardly from the outer to the inner end, with the revolving shaft and locking device.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

J ABEZ BURNS.

Witnesses CHAS. WAHLERS, D. VAN SANrvooRD. 

